John Larroquette is joining the cast of ABC’s “Boston Legal” – while Rene Auberjonois, Constance Zimmer, Julie Bowen and Mark Valley are out.

“Those four will not be returning next season as series regulars,” an ABC spokesman said.

Larro quette will join Crane Poole & Schmidt as a senior partner, ABC announced yesterday. He’ll be joined by new cast member Tara Summers, playing a young associate – while Chrisian Clemson (Jerry) is bumped up to a series regular. Production on the fourth season begins June 27 in L.A.